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| author | Tiago Natel de Moura <t.nateldemoura@f5.com> | 2020-03-09 16:28:25 +0000 |
|---|---|---|
| committer | Tiago Natel de Moura <t.nateldemoura@f5.com> | 2020-03-09 16:28:25 +0000 |
| commit | e9e5ddd5a5d9ce99768833137eac2551a710becf (patch) | |
| tree | 940e591004b16216d5122cd12b367f3ebf15e0d3 /src/nxt_clone.h | |
| parent | aacf11152c314efb1895b6d44ba72dc9f1801c7d (diff) | |
| download | unit-e9e5ddd5a5d9ce99768833137eac2551a710becf.tar.gz unit-e9e5ddd5a5d9ce99768833137eac2551a710becf.tar.bz2 | |
Refactor of process management.
The process abstraction has changed to:
setup(task, process)
start(task, process_data)
prefork(task, process, mp)
The prefork() occurs in the main process right before fork.
The file src/nxt_main_process.c is completely free of process
specific logic.
The creation of a process now supports a PROCESS_CREATED state. The
The setup() function of each process can set its state to either
created or ready. If created, a MSG_PROCESS_CREATED is sent to main
process, where external setup can be done (required for rootfs under
container).
The core processes (discovery, controller and router) doesn't need
external setup, then they all proceeds to their start() function
straight away.
In the case of applications, the load of the module happens at the
process setup() time and The module's init() function has changed
to be the start() of the process.
The module API has changed to:
setup(task, process, conf)
start(task, data)
As a direct benefit of the PROCESS_CREATED message, the clone(2) of
processes using pid namespaces now doesn't need to create a pipe
to make the child block until parent setup uid/gid mappings nor it
needs to receive the child pid.
Diffstat (limited to '')
| -rw-r--r-- | src/nxt_clone.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/nxt_clone.h b/src/nxt_clone.h index dcccf1db..c2066ce6 100644 --- a/src/nxt_clone.h +++ b/src/nxt_clone.h @@ -3,8 +3,8 @@ * Copyright (C) NGINX, Inc. */ -#ifndef _NXT_CLONE_INCLUDED_ -#define _NXT_CLONE_INCLUDED_ +#ifndef _NXT_CLONE_H_INCLUDED_ +#define _NXT_CLONE_H_INCLUDED_ #if (NXT_HAVE_CLONE_NEWUSER) @@ -36,10 +36,11 @@ typedef struct { pid_t nxt_clone(nxt_int_t flags); -#if (NXT_HAVE_CLONE_NEWUSER) +#define nxt_is_clone_flag_set(flags, test) \ + ((flags & CLONE_##test) == CLONE_##test) + -#define NXT_CLONE_USER(flags) \ - ((flags & CLONE_NEWUSER) == CLONE_NEWUSER) +#if (NXT_HAVE_CLONE_NEWUSER) NXT_EXPORT nxt_int_t nxt_clone_credential_map(nxt_task_t *task, pid_t pid, nxt_credential_t *creds, nxt_clone_t *clone); @@ -50,4 +51,5 @@ NXT_EXPORT nxt_int_t nxt_clone_vldt_credential_gidmap(nxt_task_t *task, #endif -#endif /* _NXT_CLONE_INCLUDED_ */ + +#endif /* _NXT_CLONE_H_INCLUDED_ */ |